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# EFA CORPORATION
P5TX-AT
Processor CX M1/AM K5/AM K6/Pentium
Processor Speed 75/90/100/120/133/150/166/200MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 256MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 250mm x 220mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse port, serial ports
(2), cache slot, IR connector, USB connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+---------------+---------------|
| Serial port 2 | CN1 | Speaker | J18/pins 1, |
| | | | 3, 5, 7 |
|-----------------+----------+---------------+---------------|
| Serial port 1 | CN2 | Power LED & | J18/pins 2, |
| | | keylock | 4, 6, 8, 10 |
|-----------------+----------+---------------+---------------|
| Parallel port | CN3 | Turbo LED | J18/pins 11 & |
| | | | 12 |
|-----------------+----------+---------------+---------------|
| Floppy drive | CN4 | Green PC | J18/pins 13 & |
| interface | | connector | 14 |
|-----------------+----------+---------------+---------------|
| IDE interface 2 | CN5 | IDE interface | J18/pins 15 & |
| | | LED | 16 |
|-----------------+----------+---------------+---------------|
| IDE interface 1 | CN6 | Reset switch | J18/pins 17 & |
| | | | 18 |
|-----------------+----------+---------------+---------------|
| USB connector | J2 | Green PC LED | J18/pins 19 & |
| | | | 20 |
|-----------------+----------+---------------+---------------|
| PS/2 mouse port | J3 | 32-bit PCI | PC1 – PC4 |
| | | slots | |
|-----------------+----------+---------------+---------------|
| IR connector | J9 | Cache slot | SL1 |
|-----------------+----------+---------------+---------------|
| External | J10 | | |
| battery | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------+-------+-----------------|
| » | CMOS memory normal operation | JP15 | Pins 1 & 2 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | CMOS memory clear | JP15 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16M x 36 | None |
|------------------+--------------------+--------------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 144MB | (2) 16M x 36 | (2) 2M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|---------------+----------------------+---------------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 |
|---------------+----------------------+---------------------|
| 192MB | (2) 16M x 36 | (2) 8M x 36 |
|---------------+----------------------+---------------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. Board also accepts x |
| 32 SIMMs. Memory installed in Banks 1 & 2 is |
| interchangeable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 64 | None |
|------------------+--------------------+--------------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 64MB | (1) 8M x 64 | None |
|------------------+--------------------+--------------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 72MB | (1) 8M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 80MB | (1) 8M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 96MB | (1) 8M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | SL1 |
|--------------+--------------------+------------------------|
| 256KB | (2) 32K x 32 | Not installed |
|--------------+--------------------+------------------------|
| 512KB | (2) 32K x 32 | 256KB module installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP14 |
|----------------------------+-------------------------------|
| 256KB | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 512KB | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX M1) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP2 | JP3 | JP4 | JP9 | JP10 |
| speed | speed | | | | | | |
|--------+-------+------------+-----+-----+-----+-----+------|
| 120MHz | 50MHz | 2x | 1 & | 2 & | 1 & | 2 & | 1 & |
| | | | 2 | 3 | 2 | 3 | 2 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 133MHz | 60MHz | 2x | 2 & | 2 & | 1 & | 2 & | 1 & |
| | | | 3 | 3 | 2 | 3 | 2 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 150MHz | 66MHz | 2x | 1 & | 2 & | 2 & | 2 & | 1 & |
| | | | 2 | 3 | 3 | 3 | 2 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 166MHz | 60MHz | 2x | 2 & | 2 & | 2 & | 2 & | 1 & |
| | | | 3 | 3 | 3 | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP2 | JP3 | JP4 | JP9 | JP10 |
| speed | speed | | | | | | |
|--------+-------+------------+-----+-----+-----+-----+------|
| 75MHz | 50MHz | 1.5x | 1 & | 2 & | 1 & | 1 & | 1 & |
| | | | 2 | 3 | 2 | 2 | 2 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 90MHz | 60MHz | 1.5x | 1 & | 2 & | 2 & | 1 & | 1 & |
| | | | 2 | 3 | 3 | 2 | 2 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 100MHz | 66MHz | 1.5x | 2 & | 2 & | 2 & | 1 & | 1 & |
| | | | 3 | 3 | 3 | 2 | 2 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 120MHz | 60MHz | 1.5x | 1 & | 2 & | 2 & | 1 & | 1 & |
| | | | 2 | 3 | 3 | 2 | 2 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 133MHz | 66MHz | 1.5x | 2 & | 2 & | 2 & | 1 & | 1 & |
| | | | 3 | 3 | 3 | 2 | 2 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 150MHz | 60MHz | 1.75x | 1 & | 2 & | 2 & | 2 & | 2 & |
| | | | 2 | 3 | 3 | 3 | 3 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 166MHz | 66MHz | 1.75x | 2 & | 2 & | 2 & | 2 & | 2 & |
| | | | 3 | 3 | 3 | 3 | 3 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 200MHz | 66MHz | 2x | 2 & | 2 & | 2 & | 1 & | 2 & |
| | | | 3 | 3 | 3 | 2 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP2 | JP3 | JP4 | JP9 | JP10 |
| speed | speed | | | | | | |
|--------+-------+------------+-----+-----+-----+-----+------|
| 75MHz | 50MHz | 1.5x | 1 & | 2 & | 1 & | 1 & | 1 & |
| | | | 2 | 3 | 2 | 2 | 2 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 90MHz | 60MHz | 1.5x | 1 & | 2 & | 2 & | 1 & | 1 & |
| | | | 2 | 3 | 3 | 2 | 2 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 100MHz | 66MHz | 1.5x | 2 & | 2 & | 2 & | 1 & | 1 & |
| | | | 3 | 3 | 3 | 2 | 2 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 120MHz | 60MHz | 2x | 1 & | 2 & | 2 & | 2 & | 1 & |
| | | | 2 | 3 | 3 | 3 | 2 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 133MHz | 66MHz | 2x | 2 & | 2 & | 2 & | 2 & | 1 & |
| | | | 3 | 3 | 3 | 3 | 2 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 150MHz | 60MHz | 2.5x | 1 & | 2 & | 2 & | 2 & | 2 & |
| | | | 2 | 3 | 3 | 3 | 3 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 166MHz | 66MHz | 2.5x | 2 & | 2 & | 2 & | 2 & | 2 & |
| | | | 3 | 3 | 3 | 3 | 3 |
|--------+-------+------------+-----+-----+-----+-----+------|
| 200MHz | 66MHz | 3x | 2 & | 2 & | 2 & | 1 & | 2 & |
| | | | 3 | 3 | 3 | 2 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP6 | JP7 |
|------------+--------------------+--------------------------|
| 2.5v | Pins 1 & 2 closed | Pins 1 & 3, 2 & 4 closed |
|------------+--------------------+--------------------------|
| 2.8v | Pins 3 & 4 closed | Pins 1 & 3, 2 & 4 closed |
|------------+--------------------+--------------------------|
| 3.3v | Pins 2 & 4 closed | Pins 3 & 5, 4 & 6 closed |
|------------+--------------------+--------------------------|
| 3.52v | Pins 5 & 6 closed | Pins 3 & 5, 4 & 6 closed |
+------------------------------------------------------------+